Is the sender plumbed in to a coolant hose by any chance? Here's my car, which although completely different from yours might be a clue what to look for, the gauge sender sits in a little housing in the main coolant pipe from thermostat to radiator. In this pic you can see the thermostat with the temp sender for the ECU at the top of the pic, and the gauge sender is at the bottom.
![[Linked Image]](https://tm-img.com/images/2025/03/29/IMG_2623.jpeg)
